Home / 13,925.81-20,888.40-3,395.89

Finding the Fourth Proportional to 13,925.81, 20,888.40 and 3,395.89

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Solution

The fourth proportional to 13,925.81, 20,888.40 and 3,395.89 is: 5,093.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,925.81 : 20,888.40 = 3,395.89 : x
  2. Step 2: Convert to fraction form
    13,925.81/20,888.40 = 3,395.89/x
  3. Step 3: Cross multiply
    13,925.81x = 20,888.40 × 3,395.89
  4. Step 4: Simplify right side
    13,925.81x = 70,934,604.23
  5. Step 5: Solve for x
    x = 70,934,604.23/13,925.81
  6. Step 6: Final answer
    x = 5,093.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.